The capabilities of newly-implemented Abaqus procedures for delamination propagation in composite structures subjected to fatigue loading are investigated by examining the response of double cantilever beam (DCB) tests. Two-dimensional and three-dimensional models are at first evaluated under quasi-static loading conditions using the virtual crack closure technique (VCCT). The results show good agreement between the shapes of the predicted and experimental delamination fronts. Then, fatigue analyses are performed using two fatigue procedures: direct cyclic fatigue (DCF) and simplified fatigue (SF). It is found that, when modeling the response of DCB tests, the SF and DCF procedures correctly recover the Paris law propagation rate. The analysis with the SF procedure appears to require 50 times less computational time than DCF. However, the fatigue delamination front is characterized by sharp edges. Therefore, additional modeling features such as gradual nodal release may be required before the residual lives of more complex postbuckled structures can be predicted with confidence.

Original languageEnglish
Title of host publication32nd Technical Conference of the American Society for Composites 2017
EditorsW. Yu, R.B. Pipes, J. Goodsell
PublisherDEStech publications, Inc.
Pages1009-1019
Number of pages11
Volume2
ISBN (Electronic)978-151085306-5
Publication statusPublished - 1 Jan 2017
Event32nd Technical Conference of the American Society for Composites 2017 - West Lafayette, United States
Duration: 23 Oct 201725 Oct 2017

Conference

Conference32nd Technical Conference of the American Society for Composites 2017
CountryUnited States
CityWest Lafayette
Period23/10/1725/10/17

ID: 45343907